OT J002656.6+284933 (CSS101212:002657+284933): an SU UMa-type dwarf nova with the longest superhump period

This work was supported by the Grant-in-Aid “Initiative for HighDimensional Data-Driven Science through Deepening of Sparse Modeling” (25120007) from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan. This work was also partially supported by RFBR grant 15-02-06178 (Crimean team, Shugarov and Katysheva) and Grant VEGA 2/0008/17, APVV-15-0458 (Shugarov), NSh-9670.2016.2 (Katysheva team).